package com.hx.vending.util;

import java.security.MessageDigest;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

/**
 * 采用MD5加密解密
 */
public class MD5 {
	/***
	 * MD5加码 生成32位md5码
	 */
	public static String string2MD5(String inStr) {
		MessageDigest md5 = null;
		try {
			md5 = MessageDigest.getInstance("MD5");
		} catch (Exception e) {
			System.out.println(e.toString());
			e.printStackTrace();
			return "";
		}
		char[] charArray = inStr.toCharArray();
		byte[] byteArray = new byte[charArray.length];

		for (int i = 0; i < charArray.length; i++)
			byteArray[i] = (byte) charArray[i];
		byte[] md5Bytes = md5.digest(byteArray);
		StringBuffer hexValue = new StringBuffer();
		for (int i = 0; i < md5Bytes.length; i++) {
			int val = ((int) md5Bytes[i]) & 0xff;
			if (val < 16)
				hexValue.append("0");
			hexValue.append(Integer.toHexString(val));
		}
		return hexValue.toString();

	}
	
	/**
	 * 加密解密算法 执行一次加密，两次解密
	 */
	public static String convertMD5(String inStr) {

		char[] a = inStr.toCharArray();
		for (int i = 0; i < a.length; i++) {
			a[i] = (char) (a[i] ^ 't');
		}
		String s = new String(a);
		return s;

	}


	/**
	 * 唯一订单id
	 * @return
	 */
	public static String orderuuidnumber(){
		String date = new SimpleDateFormat("yyyyMMdd").format(new Date());
		String seconds = new SimpleDateFormat("HHmmss").format(new Date());
		return "51"+date+"00001000"+getTwo()+"00"+seconds+getTwo();
	}
	/**
	 * 生成末尾随机数
	 * @return
	 */
	private static String getTwo(){
		Random rad=new Random();
 
		String result  = rad.nextInt(100) +"";
 
		if(result.length()==1){
			result = "0" + result;
		}
		return result;
	}
	
	public static void main(String[] args) {
		
		for (int i = 0; i < 100; i++) {
			System.out.println(orderuuidnumber());
		}

	}
}
